Flynn Believes That the Reason for the Rapid Rise in IQ

Multiple Choice

Flynn believes that the reason for the rapid rise in IQ over the last 50 years is due to

A) the prevention of more and more birth defects and birth injuries.
B) an improvement in physical fitness in Western, industrialized countries.
C) the diversity created by the increased immigration that has taken place during the same time period.
D) modern society becoming more complex and requiring more abstract, "scientific" skills.